Cai Liuyang created FLINK-33759:
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Summary: flink parquet writer support write nested array or map
type
Key: FLINK-33759
URL: https://issues.apache.org/jira/browse/FLINK-33759
Project: Flink
Issue Type: Improvement
Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
Reporter: Cai Liuyang
When we use flink-parquet format wirte Map<String, String>[] type (which will
be read by spark job), we encounter an exception:
`org.apache.parquet.io.ParquetEncodingException: empty fields are illegal, the
field should be ommited completely instead`, after review the code, we found
flink-parquet doesn't support write nested array or map, because
[ArrayWriter]([https://github.com/apache/flink/blob/master/flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/row/ParquetRowDataWriter.java#L437)]
and
[MapWriter]([https://github.com/apache/flink/blob/master/flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/row/ParquetRowDataWriter.java#L391)]
doesn't impl `public void write(ArrayData arrayData, int ordinal) {}` function.
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